private static TriMesh LoadPlyStream(Stream stream)
{
TriMesh mesh = new TriMesh();
mesh.Traits.HasFaceVertexNormals = true;
mesh.Traits.HasTextureCoordinates = true;
StreamReader sr = new StreamReader(stream);
PlyFileProcessorState state = new PlyFileProcessorState();
string line;
while ((line = sr.ReadLine()) != null)
{
ProcessPlyLine(mesh, line, state);
}
mesh.TrimExcess();
return mesh;
}
private static TriMesh LoadGuStream(Stream stream)
{
TriMesh mesh = new TriMesh();
mesh.Traits.HasFaceVertexNormals = true;
mesh.Traits.HasTextureCoordinates = true;
StreamReader sr = new StreamReader(stream);
PlyFileProcessorState state = new PlyFileProcessorState();
string line;
while ((line = sr.ReadLine()) != null)
{
ProcessGuLine(mesh, line, state);
}
mesh.TrimExcess();
return(mesh);
}
private static void ProcessPlyLine(TriMesh mesh, string line, PlyFileProcessorState state)
{
// Trim out comments (allow comments trailing on a line)
int commentStart = line.IndexOf("ply");
if (commentStart != -1)
{
line = line.Substring(0, commentStart);
}
// Tokenize line
string[] tokens = line.Split((char[])null, StringSplitOptions.RemoveEmptyEntries);
// Process line based on the keyword used
if (tokens.Length > 0)
{
int? v;
float x, y, z;
TriMesh.Vertex[] faceVertices;
int?[] vt, vn;
if (tokens[0] == "element" && tokens[1] == "vertex")
{
state.Vnum = Int32.Parse(tokens[2]);
}
else if (tokens[0] == "element" && tokens[1] == "face")
{
state.Fnum = Int32.Parse(tokens[2]);
}
else if (tokens[0] == "end_header")
{
state.startv = true;
}
else if (state.startv == true )
{
x = Single.Parse(tokens[0]);
y = Single.Parse(tokens[1]);
z = Single.Parse(tokens[2]);
double r = Single.Parse(tokens[3]);
double g = Single.Parse(tokens[4]);
double b = Single.Parse(tokens[5]);
double nx = Single.Parse(tokens[6]);
double ny = Single.Parse(tokens[7]);
double nz = Single.Parse(tokens[8]);
int sel = int.Parse(tokens[9]);
double tx = Single.Parse(tokens[10]);
double ty = Single.Parse(tokens[11]);
TriMesh.Vertex vertex= mesh.Vertices.Add(new VertexTraits(x, y, z));
vertex.Traits.Color = new Color4(r, g, b);
vertex.Traits.SelectedFlag = (byte)sel;
vertex.Traits.UV.x = tx;
vertex.Traits.UV.y = ty;
state.countv += 1;
if (state.countv == state.Vnum)
{
state.startf = true;
state.startv = false;
}
}
else if (state.startf == true)
{
int vCount = int.Parse(tokens[0]);
faceVertices = new TriMesh.Vertex[vCount];
// Parse vertex/texture coordinate/normal indices
for (int i = 0; i < faceVertices.Length; ++i)
{
//string[] vertexTokens = tokens[i + 1].Split("/".ToCharArray());
v = Int32.Parse(tokens[i + 1]);
faceVertices[i] = mesh.Vertices[v.Value];
}
TriMesh.Face[] addedFaces = mesh.Faces.AddTriangles(faceVertices);
double r = Single.Parse(tokens[vCount+1]);
double g = Single.Parse(tokens[vCount + 2]);
double b = Single.Parse(tokens[vCount + 3]);
int sel = int.Parse(tokens[vCount + 4]);
//double vx = Single.Parse(tokens[vCount + 5]);
//double vy = Single.Parse(tokens[vCount + 6]);
addedFaces[0].Traits.SelectedFlag = (byte)sel;
addedFaces[0].Traits.Color = new Color4(r, g, b);
state.countf+= 1;
if (state.countf== state.Fnum)
{
state.starte = true;
state.startf = false;
}
}
else if (state.starte == true)
{
int sel = int.Parse(tokens[0]);
mesh.Edges[state.counte].Traits.SelectedFlag =(byte)sel;
state.counte += 1;
}
}
}
private static void ProcessGuLine(TriMesh mesh, string line, PlyFileProcessorState state)
{
// Trim out comments (allow comments trailing on a line)
int commentStart = line.IndexOf("m");
if (commentStart != -1)
{
line = line.Substring(0, commentStart);
}
// Tokenize line
string[] tokens = line.Split((char[])null, StringSplitOptions.RemoveEmptyEntries);
// Process line based on the keyword used
if (tokens.Length > 0)
{
int? v;
float x, y, z;
TriMesh.Vertex[] faceVertices;
int?[] vt, vn;
if (tokens[0] == "element" && tokens[1] == "vertex")
{
state.Vnum = Int32.Parse(tokens[2]);
}
else if (tokens[0] == "element" && tokens[1] == "face")
{
state.Fnum = Int32.Parse(tokens[2]);
}
else if (tokens[0] == "end_header")
{
state.startv = true;
}
else if (state.startv == true)
{
x = Single.Parse(tokens[0]);
y = Single.Parse(tokens[1]);
z = Single.Parse(tokens[2]);
double r = Single.Parse(tokens[3]);
double g = Single.Parse(tokens[4]);
double b = Single.Parse(tokens[5]);
double nx = Single.Parse(tokens[6]);
double ny = Single.Parse(tokens[7]);
double nz = Single.Parse(tokens[8]);
int sel = int.Parse(tokens[9]);
double tx = Single.Parse(tokens[10]);
double ty = Single.Parse(tokens[11]);
TriMesh.Vertex vertex = mesh.Vertices.Add(new VertexTraits(x, y, z));
vertex.Traits.Color = new Color4(r, g, b);
vertex.Traits.SelectedFlag = (byte)sel;
vertex.Traits.UV.x = tx;
vertex.Traits.UV.y = ty;
state.countv += 1;
if (state.countv == state.Vnum)
{
state.startf = true;
state.startv = false;
}
}
else if (state.startf == true)
{
int vCount = int.Parse(tokens[0]);
faceVertices = new TriMesh.Vertex[vCount];
// Parse vertex/texture coordinate/normal indices
for (int i = 0; i < faceVertices.Length; ++i)
{
//string[] vertexTokens = tokens[i + 1].Split("/".ToCharArray());
v = Int32.Parse(tokens[i + 1]);
faceVertices[i] = mesh.Vertices[v.Value];
}
TriMesh.Face[] addedFaces = mesh.Faces.AddTriangles(faceVertices);
double r = Single.Parse(tokens[vCount + 1]);
double g = Single.Parse(tokens[vCount + 2]);
double b = Single.Parse(tokens[vCount + 3]);
int sel = int.Parse(tokens[vCount + 4]);
//double vx = Single.Parse(tokens[vCount + 5]);
//double vy = Single.Parse(tokens[vCount + 6]);
addedFaces[0].Traits.SelectedFlag = (byte)sel;
addedFaces[0].Traits.Color = new Color4(r, g, b);
state.countf += 1;
if (state.countf == state.Fnum)
{
state.starte = true;
state.startf = false;
}
}
else if (state.starte == true)
{
int sel = int.Parse(tokens[0]);
mesh.Edges[state.counte].Traits.SelectedFlag = (byte)sel;
state.counte += 1;
}
}
}